diff options
author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2009-12-16 01:11:51 +0100 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2009-12-16 01:11:51 +0100 |
commit | 55dbc2b5d857d35262ad3116803dfb31b733d031 (patch) | |
tree | 9b9a7d7952ff74855de2a6c348e9c856a531158d /xen/public/trace.h | |
parent | 870925205c78415dc4c594bfae9de8eb31745b81 (diff) |
Add Xen support
2009-03-11 Samuel Thibault <samuel.thibault@ens-lyon.org>
* i386/i386/vm_param.h (VM_MIN_KERNEL_ADDRESS) [MACH_XEN]: Set to
0x20000000.
* i386/i386/i386asm.sym (pfn_list) [VM_MIN_KERNEL_ADDRESS ==
LINEAR_MIN_KERNEL_ADDRESS]: Define to constant PFN_LIST.
2009-02-27 Samuel Thibault <samuel.thibault@ens-lyon.org>
* i386/intel/pmap.c [MACH_HYP] (INVALIDATE_TLB): Call hyp_invlpg
instead of flush_tlb when e - s is compile-time known to be
PAGE_SIZE.
2008-11-27 Samuel Thibault <samuel.thibault@ens-lyon.org>
* i386/configfrag.ac (enable_pae): Enable by default on the Xen
platform.
2007-11-14 Samuel Thibault <samuel.thibault@ens-lyon.org>
* i386/i386at/model_dep.c (machine_relax): New function.
(c_boot_entry): Refuse to boot as dom0.
2007-10-17 Samuel Thibault <samuel.thibault@ens-lyon.org>
* i386/i386/fpu.c [MACH_XEN]: Disable unused fpintr().
2007-08-12 Samuel Thibault <samuel.thibault@ens-lyon.org>
* Makefile.am (clib_routines): Add _START.
* i386/xen/xen_boothdr: Use _START for VIRT_BASE and PADDR_OFFSET. Add
GUEST_VERSION and XEN_ELFNOTE_FEATURES.
2007-06-13 Samuel Thibault <samuel.thibault@ens-lyon.org>
* i386/i386/user_ldt.h (user_ldt) [MACH_XEN]: Add alloc field.
* i386/i386/user_ldt.c (i386_set_ldt) [MACH_XEN]: Round allocation of
LDT to a page, set back LDT pages read/write before freeing them.
(user_ldt_free) [MACH_XEN]: Likewise.
2007-04-18 Samuel Thibault <samuel.thibault@ens-lyon.org>
* device/ds_routines.c [MACH_HYP]: Add hypervisor block and net devices.
2007-02-19 Thomas Schwinge <tschwinge@gnu.org>
* i386/xen/Makefrag.am [PLATFORM_xen] (gnumach_LINKFLAGS): Define.
* Makefrag.am: Include `xen/Makefrag.am'.
* configure.ac: Include `xen/configfrag.ac'.
(--enable-platform): Support the `xen' platform.
* i386/configfrag.ac: Likewise.
* i386/Makefrag.am [PLATFORM_xen]: Include `i386/xen/Makefrag.am'.
2007-02-19 Samuel Thibault <samuel.thibault@ens-lyon.org>
Thomas Schwinge <tschwinge@gnu.org>
* i386/xen/Makefrag.am: New file.
* xen/Makefrag.am: Likewise.
* xen/configfrag.ac: Likewise.
2007-02-11 (and later dates) Samuel Thibault <samuel.thibault@ens-lyon.org>
Xen support
* Makefile.am (clib_routines): Add _start.
* Makefrag.am (include_mach_HEADERS): Add include/mach/xen.h.
* device/cons.c (cnputc): Call hyp_console_write.
* i386/Makefrag.am (libkernel_a_SOURCES): Move non-Xen source to
[PLATFORM_at].
* i386/i386/debug_trace.S: Include <i386/xen.h>
* i386/i386/fpu.c [MACH_HYP] (init_fpu): Call set_ts() and clear_ts(),
do not enable CR0_EM.
* i386/i386/gdt.c: Include <mach/xen.h> and <intel/pmap.h>.
[MACH_XEN]: Make gdt array extern.
[MACH_XEN] (gdt_init): Register gdt with hypervisor. Request 4gb
segments assist. Shift la_shift.
[MACH_PSEUDO_PHYS] (gdt_init): Shift pfn_list.
* i386/i386/gdt.h [MACH_XEN]: Don't define KERNEL_LDT and LINEAR_DS.
* i386/i386/i386asm.sym: Include <i386/xen.h>.
[MACH_XEN]: Remove KERNEL_LDT, Add shared_info's CPU_CLI, CPU_PENDING,
CPU_PENDING_SEL, PENDING, EVTMASK and CR2.
* i386/i386/idt.c [MACH_HYP] (idt_init): Register trap table with
hypervisor.
* i386/i386/idt_inittab.S: Include <i386/i386asm.h>.
[MACH_XEN]: Set IDT_ENTRY() for hypervisor. Set trap table terminator.
* i386/i386/ktss.c [MACH_XEN] (ktss_init): Request exception task switch
from hypervisor.
* i386/i386/ldt.c: Include <mach/xen.h> and <intel/pmap.h>
[MACH_XEN]: Make ldt array extern.
[MACH_XEN] (ldt_init): Set ldt readwrite.
[MACH_HYP] (ldt_init): Register ldt with hypervisor.
* i386/i386/locore.S: Include <i386/xen.h>. Handle KERNEL_RING == 1
case.
[MACH_XEN]: Read hyp_shared_info's CR2 instead of %cr2.
[MACH_PSEUDO_PHYS]: Add mfn_to_pfn computation.
[MACH_HYP]: Drop Cyrix I/O-based detection. Read cr3 instead of %cr3.
Make hypervisor call for pte invalidation.
* i386/i386/mp_desc.c: Include <mach/xen.h>.
[MACH_HYP] (mp_desc_init): Panic.
* i386/i386/pcb.c: Include <mach/xen.h>.
[MACH_XEN] (switch_ktss): Request stack switch from hypervisor.
[MACH_HYP] (switch_ktss): Request ldt and gdt switch from hypervisor.
* i386/i386/phys.c: Include <mach/xen.h>
[MACH_PSEUDO_PHYS] (kvtophys): Do page translation.
* i386/i386/proc_reg.h [MACH_HYP] (cr3): New declaration.
(set_cr3, get_cr3, set_ts, clear_ts): Implement macros.
* i386/i386/seg.h [MACH_HYP]: Define KERNEL_RING macro. Include
<mach/xen.h>
[MACH_XEN] (fill_descriptor): Register descriptor with hypervisor.
* i386/i386/spl.S: Include <i386/xen.h> and <i386/i386/asm.h>
[MACH_XEN] (pic_mask): #define to int_mask.
[MACH_XEN] (SETMASK): Implement.
* i386/i386/vm_param.h [MACH_XEN] (HYP_VIRT_START): New macro.
[MACH_XEN]: Set VM_MAX_KERNEL_ADDRESS to HYP_VIRT_START-
LINEAR_MIN_KERNEL_ADDRESS + VM_MIN_KERNEL_ADDRESS. Increase
KERNEL_STACK_SIZE and INTSTACK_SIZE to 4 pages.
* i386/i386at/conf.c [MACH_HYP]: Remove hardware devices, add hypervisor
console device.
* i386/i386at/cons_conf.c [MACH_HYP]: Add hypervisor console device.
* i386/i386at/model_dep.c: Include <sys/types.h>, <mach/xen.h>.
[MACH_XEN] Include <xen/console.h>, <xen/store.h>, <xen/evt.h>,
<xen/xen.h>.
[MACH_PSEUDO_PHYS]: New boot_info, mfn_list, pfn_list variables.
[MACH_XEN]: New la_shift variable.
[MACH_HYP] (avail_next, mem_size_init): Drop BIOS skipping mecanism.
[MACH_HYP] (machine_init): Call hyp_init(), drop hardware
initialization.
[MACH_HYP] (machine_idle): Call hyp_idle().
[MACH_HYP] (halt_cpu): Call hyp_halt().
[MACH_HYP] (halt_all_cpus): Call hyp_reboot() or hyp_halt().
[MACH_HYP] (i386at_init): Initialize with hypervisor.
[MACH_XEN] (c_boot_entry): Add Xen-specific initialization.
[MACH_HYP] (init_alloc_aligned, pmap_valid_page): Drop zones skipping
mecanism.
* i386/intel/pmap.c: Include <mach/xen.h>.
[MACH_PSEUDO_PHYS] (WRITE_PTE): Do page translation.
[MACH_HYP] (INVALIDATE_TLB): Request invalidation from hypervisor.
[MACH_XEN] (pmap_map_bd, pmap_create, pmap_destroy, pmap_remove_range)
(pmap_page_protect, pmap_protect, pmap_enter, pmap_change_wiring)
(pmap_attribute_clear, pmap_unmap_page_zero, pmap_collect): Request MMU
update from hypervisor.
[MACH_XEN] (pmap_bootstrap): Request pagetable initialization from
hypervisor.
[MACH_XEN] (pmap_set_page_readwrite, pmap_set_page_readonly)
(pmap_set_page_readonly_init, pmap_clear_bootstrap_pagetable)
(pmap_map_mfn): New functions.
* i386/intel/pmap.h [MACH_XEN] (INTEL_PTE_GLOBAL): Disable global page
support.
[MACH_PSEUDO_PHYS] (pte_to_pa): Do page translation.
[MACH_XEN] (pmap_set_page_readwrite, pmap_set_page_readonly)
(pmap_set_page_readonly_init, pmap_clear_bootstrap_pagetable)
(pmap_map_mfn): Declare functions.
* i386/i386/xen.h: New file.
* i386/xen/xen.c: New file.
* i386/xen/xen_boothdr.S: New file.
* i386/xen/xen_locore.S: New file.
* include/mach/xen.h: New file.
* kern/bootstrap.c [MACH_XEN] (boot_info): Declare variable.
[MACH_XEN] (bootstrap_create): Rebase multiboot header.
* kern/debug.c: Include <mach/xen.h>.
[MACH_HYP] (panic): Call hyp_crash() without delay.
* linux/dev/include/asm-i386/segment.h [MACH_HYP] (KERNEL_CS)
(KERNEL_DS): Use ring 1.
* xen/block.c: New file.
* xen/block.h: Likewise.
* xen/console.c: Likewise.
* xen/console.h: Likewise.
* xen/evt.c: Likewise.
* xen/evt.h: Likewise.
* xen/grant.c: Likewise.
* xen/grant.h: Likewise.
* xen/net.c: Likewise.
* xen/net.h: Likewise.
* xen/ring.c: Likewise.
* xen/ring.h: Likewise.
* xen/store.c: Likewise.
* xen/store.h: Likewise.
* xen/time.c: Likewise.
* xen/time.h: Likewise.
* xen/xen.c: Likewise.
* xen/xen.h: Likewise.
* xen/public/COPYING: Import file from Xen.
* xen/public/callback.h: Likewise.
* xen/public/dom0_ops.h: Likewise.
* xen/public/domctl.h: Likewise.
* xen/public/elfnote.h: Likewise.
* xen/public/elfstructs.h: Likewise.
* xen/public/event_channel.h: Likewise.
* xen/public/features.h: Likewise.
* xen/public/grant_table.h: Likewise.
* xen/public/kexec.h: Likewise.
* xen/public/libelf.h: Likewise.
* xen/public/memory.h: Likewise.
* xen/public/nmi.h: Likewise.
* xen/public/physdev.h: Likewise.
* xen/public/platform.h: Likewise.
* xen/public/sched.h: Likewise.
* xen/public/sysctl.h: Likewise.
* xen/public/trace.h: Likewise.
* xen/public/vcpu.h: Likewise.
* xen/public/version.h: Likewise.
* xen/public/xen-compat.h: Likewise.
* xen/public/xen.h: Likewise.
* xen/public/xencomm.h: Likewise.
* xen/public/xenoprof.h: Likewise.
* xen/public/arch-x86/xen-mca.h: Likewise.
* xen/public/arch-x86/xen-x86_32.h: Likewise.
* xen/public/arch-x86/xen-x86_64.h: Likewise.
* xen/public/arch-x86/xen.h: Likewise.
* xen/public/arch-x86_32.h: Likewise.
* xen/public/arch-x86_64.h: Likewise.
* xen/public/io/blkif.h: Likewise.
* xen/public/io/console.h: Likewise.
* xen/public/io/fbif.h: Likewise.
* xen/public/io/fsif.h: Likewise.
* xen/public/io/kbdif.h: Likewise.
* xen/public/io/netif.h: Likewise.
* xen/public/io/pciif.h: Likewise.
* xen/public/io/protocols.h: Likewise.
* xen/public/io/ring.h: Likewise.
* xen/public/io/tpmif.h: Likewise.
* xen/public/io/xenbus.h: Likewise.
* xen/public/io/xs_wire.h: Likewise.
Diffstat (limited to 'xen/public/trace.h')
-rw-r--r-- | xen/public/trace.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/xen/public/trace.h b/xen/public/trace.h new file mode 100644 index 0000000..0fc864d --- /dev/null +++ b/xen/public/trace.h @@ -0,0 +1,206 @@ +/****************************************************************************** + * include/public/trace.h + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Mark Williamson, (C) 2004 Intel Research Cambridge + * Copyright (C) 2005 Bin Ren + */ + +#ifndef __XEN_PUBLIC_TRACE_H__ +#define __XEN_PUBLIC_TRACE_H__ + +#define TRACE_EXTRA_MAX 7 +#define TRACE_EXTRA_SHIFT 28 + +/* Trace classes */ +#define TRC_CLS_SHIFT 16 +#define TRC_GEN 0x0001f000 /* General trace */ +#define TRC_SCHED 0x0002f000 /* Xen Scheduler trace */ +#define TRC_DOM0OP 0x0004f000 /* Xen DOM0 operation trace */ +#define TRC_HVM 0x0008f000 /* Xen HVM trace */ +#define TRC_MEM 0x0010f000 /* Xen memory trace */ +#define TRC_PV 0x0020f000 /* Xen PV traces */ +#define TRC_SHADOW 0x0040f000 /* Xen shadow tracing */ +#define TRC_PM 0x0080f000 /* Xen power management trace */ +#define TRC_ALL 0x0ffff000 +#define TRC_HD_TO_EVENT(x) ((x)&0x0fffffff) +#define TRC_HD_CYCLE_FLAG (1UL<<31) +#define TRC_HD_INCLUDES_CYCLE_COUNT(x) ( !!( (x) & TRC_HD_CYCLE_FLAG ) ) +#define TRC_HD_EXTRA(x) (((x)>>TRACE_EXTRA_SHIFT)&TRACE_EXTRA_MAX) + +/* Trace subclasses */ +#define TRC_SUBCLS_SHIFT 12 + +/* trace subclasses for SVM */ +#define TRC_HVM_ENTRYEXIT 0x00081000 /* VMENTRY and #VMEXIT */ +#define TRC_HVM_HANDLER 0x00082000 /* various HVM handlers */ + +#define TRC_SCHED_MIN 0x00021000 /* Just runstate changes */ +#define TRC_SCHED_VERBOSE 0x00028000 /* More inclusive scheduling */ + +/* Trace events per class */ +#define TRC_LOST_RECORDS (TRC_GEN + 1) +#define TRC_TRACE_WRAP_BUFFER (TRC_GEN + 2) +#define TRC_TRACE_CPU_CHANGE (TRC_GEN + 3) + +#define TRC_SCHED_RUNSTATE_CHANGE (TRC_SCHED_MIN + 1) +#define TRC_SCHED_DOM_ADD (TRC_SCHED_VERBOSE + 1) +#define TRC_SCHED_DOM_REM (TRC_SCHED_VERBOSE + 2) +#define TRC_SCHED_SLEEP (TRC_SCHED_VERBOSE + 3) +#define TRC_SCHED_WAKE (TRC_SCHED_VERBOSE + 4) +#define TRC_SCHED_YIELD (TRC_SCHED_VERBOSE + 5) +#define TRC_SCHED_BLOCK (TRC_SCHED_VERBOSE + 6) +#define TRC_SCHED_SHUTDOWN (TRC_SCHED_VERBOSE + 7) +#define TRC_SCHED_CTL (TRC_SCHED_VERBOSE + 8) +#define TRC_SCHED_ADJDOM (TRC_SCHED_VERBOSE + 9) +#define TRC_SCHED_SWITCH (TRC_SCHED_VERBOSE + 10) +#define TRC_SCHED_S_TIMER_FN (TRC_SCHED_VERBOSE + 11) +#define TRC_SCHED_T_TIMER_FN (TRC_SCHED_VERBOSE + 12) +#define TRC_SCHED_DOM_TIMER_FN (TRC_SCHED_VERBOSE + 13) +#define TRC_SCHED_SWITCH_INFPREV (TRC_SCHED_VERBOSE + 14) +#define TRC_SCHED_SWITCH_INFNEXT (TRC_SCHED_VERBOSE + 15) + +#define TRC_MEM_PAGE_GRANT_MAP (TRC_MEM + 1) +#define TRC_MEM_PAGE_GRANT_UNMAP (TRC_MEM + 2) +#define TRC_MEM_PAGE_GRANT_TRANSFER (TRC_MEM + 3) + +#define TRC_PV_HYPERCALL (TRC_PV + 1) +#define TRC_PV_TRAP (TRC_PV + 3) +#define TRC_PV_PAGE_FAULT (TRC_PV + 4) +#define TRC_PV_FORCED_INVALID_OP (TRC_PV + 5) +#define TRC_PV_EMULATE_PRIVOP (TRC_PV + 6) +#define TRC_PV_EMULATE_4GB (TRC_PV + 7) +#define TRC_PV_MATH_STATE_RESTORE (TRC_PV + 8) +#define TRC_PV_PAGING_FIXUP (TRC_PV + 9) +#define TRC_PV_GDT_LDT_MAPPING_FAULT (TRC_PV + 10) +#define TRC_PV_PTWR_EMULATION (TRC_PV + 11) +#define TRC_PV_PTWR_EMULATION_PAE (TRC_PV + 12) + /* Indicates that addresses in trace record are 64 bits */ +#define TRC_64_FLAG (0x100) + +#define TRC_SHADOW_NOT_SHADOW (TRC_SHADOW + 1) +#define TRC_SHADOW_FAST_PROPAGATE (TRC_SHADOW + 2) +#define TRC_SHADOW_FAST_MMIO (TRC_SHADOW + 3) +#define TRC_SHADOW_FALSE_FAST_PATH (TRC_SHADOW + 4) +#define TRC_SHADOW_MMIO (TRC_SHADOW + 5) +#define TRC_SHADOW_FIXUP (TRC_SHADOW + 6) +#define TRC_SHADOW_DOMF_DYING (TRC_SHADOW + 7) +#define TRC_SHADOW_EMULATE (TRC_SHADOW + 8) +#define TRC_SHADOW_EMULATE_UNSHADOW_USER (TRC_SHADOW + 9) +#define TRC_SHADOW_EMULATE_UNSHADOW_EVTINJ (TRC_SHADOW + 10) +#define TRC_SHADOW_EMULATE_UNSHADOW_UNHANDLED (TRC_SHADOW + 11) +#define TRC_SHADOW_WRMAP_BF (TRC_SHADOW + 12) +#define TRC_SHADOW_PREALLOC_UNPIN (TRC_SHADOW + 13) +#define TRC_SHADOW_RESYNC_FULL (TRC_SHADOW + 14) +#define TRC_SHADOW_RESYNC_ONLY (TRC_SHADOW + 15) + +/* trace events per subclass */ +#define TRC_HVM_VMENTRY (TRC_HVM_ENTRYEXIT + 0x01) +#define TRC_HVM_VMEXIT (TRC_HVM_ENTRYEXIT + 0x02) +#define TRC_HVM_VMEXIT64 (TRC_HVM_ENTRYEXIT + TRC_64_FLAG + 0x02) +#define TRC_HVM_PF_XEN (TRC_HVM_HANDLER + 0x01) +#define TRC_HVM_PF_XEN64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x01) +#define TRC_HVM_PF_INJECT (TRC_HVM_HANDLER + 0x02) +#define TRC_HVM_PF_INJECT64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x02) +#define TRC_HVM_INJ_EXC (TRC_HVM_HANDLER + 0x03) +#define TRC_HVM_INJ_VIRQ (TRC_HVM_HANDLER + 0x04) +#define TRC_HVM_REINJ_VIRQ (TRC_HVM_HANDLER + 0x05) +#define TRC_HVM_IO_READ (TRC_HVM_HANDLER + 0x06) +#define TRC_HVM_IO_WRITE (TRC_HVM_HANDLER + 0x07) +#define TRC_HVM_CR_READ (TRC_HVM_HANDLER + 0x08) +#define TRC_HVM_CR_READ64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x08) +#define TRC_HVM_CR_WRITE (TRC_HVM_HANDLER + 0x09) +#define TRC_HVM_CR_WRITE64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x09) +#define TRC_HVM_DR_READ (TRC_HVM_HANDLER + 0x0A) +#define TRC_HVM_DR_WRITE (TRC_HVM_HANDLER + 0x0B) +#define TRC_HVM_MSR_READ (TRC_HVM_HANDLER + 0x0C) +#define TRC_HVM_MSR_WRITE (TRC_HVM_HANDLER + 0x0D) +#define TRC_HVM_CPUID (TRC_HVM_HANDLER + 0x0E) +#define TRC_HVM_INTR (TRC_HVM_HANDLER + 0x0F) +#define TRC_HVM_NMI (TRC_HVM_HANDLER + 0x10) +#define TRC_HVM_SMI (TRC_HVM_HANDLER + 0x11) +#define TRC_HVM_VMMCALL (TRC_HVM_HANDLER + 0x12) +#define TRC_HVM_HLT (TRC_HVM_HANDLER + 0x13) +#define TRC_HVM_INVLPG (TRC_HVM_HANDLER + 0x14) +#define TRC_HVM_INVLPG64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x14) +#define TRC_HVM_MCE (TRC_HVM_HANDLER + 0x15) +#define TRC_HVM_IO_ASSIST (TRC_HVM_HANDLER + 0x16) +#define TRC_HVM_IO_ASSIST64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x16) +#define TRC_HVM_MMIO_ASSIST (TRC_HVM_HANDLER + 0x17) +#define TRC_HVM_MMIO_ASSIST64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x17) +#define TRC_HVM_CLTS (TRC_HVM_HANDLER + 0x18) +#define TRC_HVM_LMSW (TRC_HVM_HANDLER + 0x19) +#define TRC_HVM_LMSW64 (TRC_HVM_HANDLER + TRC_64_FLAG + 0x19) + +/* trace subclasses for power management */ +#define TRC_PM_FREQ 0x00801000 /* xen cpu freq events */ +#define TRC_PM_IDLE 0x00802000 /* xen cpu idle events */ + +/* trace events for per class */ +#define TRC_PM_FREQ_CHANGE (TRC_PM_FREQ + 0x01) +#define TRC_PM_IDLE_ENTRY (TRC_PM_IDLE + 0x01) +#define TRC_PM_IDLE_EXIT (TRC_PM_IDLE + 0x02) + +/* This structure represents a single trace buffer record. */ +struct t_rec { + uint32_t event:28; + uint32_t extra_u32:3; /* # entries in trailing extra_u32[] array */ + uint32_t cycles_included:1; /* u.cycles or u.no_cycles? */ + union { + struct { + uint32_t cycles_lo, cycles_hi; /* cycle counter timestamp */ + uint32_t extra_u32[7]; /* event data items */ + } cycles; + struct { + uint32_t extra_u32[7]; /* event data items */ + } nocycles; + } u; +}; + +/* + * This structure contains the metadata for a single trace buffer. The head + * field, indexes into an array of struct t_rec's. + */ +struct t_buf { + /* Assume the data buffer size is X. X is generally not a power of 2. + * CONS and PROD are incremented modulo (2*X): + * 0 <= cons < 2*X + * 0 <= prod < 2*X + * This is done because addition modulo X breaks at 2^32 when X is not a + * power of 2: + * (((2^32 - 1) % X) + 1) % X != (2^32) % X + */ + uint32_t cons; /* Offset of next item to be consumed by control tools. */ + uint32_t prod; /* Offset of next item to be produced by Xen. */ + /* Records follow immediately after the meta-data header. */ +}; + +#endif /* __XEN_PUBLIC_TRACE_H__ */ + +/* + * Local variables: + * mode: C + * c-set-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ + */ |